Not sure if you check out
www.teamdelsol.com It has great information about the del-Sol.
Why an Si? Are you planning on swapping in a bigger engine? Granted Si's are easier to find then the VTEC models, but just curious as to why you are looking at Si's.
In 1995 Honda introduced Power Door locks, Trunck release, and a low fuel light. Not available in 93/94.
1997 was the last year Honda made the del-Sol. There were a little over 5,000 sols made for that year, so they are pretty rare for 97. There were only 750 VTEC models made for that year. That allows roughly about 2250 S models and 2250 Si models. No one is really sure on the exact number for the S and Si models, but that's a general quess. The 750 is a confirmed number.
The 95 is also kind of sought out year. First year for additional options, but last year for the aux lights. Also the 94/95 VTEC model has the b16a3 with an obd 1 computer and redlines at 8250. The 96/97 VTEC models have the b16a2 with an obd2 computer and redlines at 8000rpm. (Same engine in the 99/00 Civic Si) Both engines produce the same hp, torque, and compression, but different redlines and computer.
www.kaminari.com makes a full bumper without the aux lights, but they do offer a lip to add on the stock bumper for the aux lights. Kaminari doesn't advertise there lip on there site, but it's still available. If you check out
www.teamdelsol.com then there is a link to body kits that are available for the sol.
Not sure about the disc breaks and sizing, but I think it wouldn't be a problem swapping them out. I honestly didn't know they changed diameter size. cool. I just remember that the S models have drums in the back.
I can't remember where the recall list is. Maybe on teamdelsol. The rubber gaskets were redesigned in 95 I believe. There was leaking issues in 93/94 gaskest around the targa top.